BMC Microbiology

Table 2 Production of nitrite and nitrous oxide from nitrate or ammonium per strain (n = 2)

From: Niche differentiation in nitrogen metabolism among methanotrophs within an operational taxonomic unit

		dNMS (10 mM KNO₃) cultivation			dAMS (10 mM NH₄Cl) cultivation		Phenotype
		NO₂ ⁻production	N₂O production	NO₂ ⁻↘ & N₂O↗^a	NO₂ ⁻production	N₂O production
M. methanica	NCIMB 11130^T	+	+	-	-	+	I
	R-45362	+	+	+	-	+	II
	R-45363	-	-	-	-	+	III
	R-45364	+	+	-	-	+	I
	R-45371	+/−^b	+	-	+/−^b	+	IV
	R-45372	+	+	+	-	+	II
	R-45374	+	+	+	-	+	II
M. koyamae	NCIMB 14606^T	+	+	+	-	+	II
	R-45378	+	+	+	-	+	II
	R-45383	+	-	-	-	-	V
	R-49799	+	+	+	-	+	II
	R-49807	+	+	+	-	-	VI
M. lenta	R-45370	+	+	Nt^c	+/−^b	+	VII
	R-45377	+	Nt^c	Nt^c	+/−^b	+	VII
Type Ib	R-49797	+	+	+	-	+	II
Type II	R-45379	+	+	-	+	+	VIII

^aObserved decline in NO₂ ⁻ levels and corresponding rise in N₂O levels over time.
^b+, positive result (>10 μM NO₂ ⁻ or N₂O-N); −, negative result (<10 μM NO₂ ⁻ or N₂O-N); +/−, Values around the detection limit of the assay (10 μM);
^cNt, Not tested due to slow growth of the strain.

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ISSN: 1471-2180

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